wicket
|
| posted on 15/1/08 at 11:34 PM |
|
|
Stripped Plug thread
I have friend with a 'K' series that has stripped a plug thread. He considering buying from Namrick a repair kit that consists of a tap, a
fitting tool & helicoils. Anybody had experience doing this, any tips/problems to pass on. Any help much appreciated.
|
|
|
|
|
Jon Ison
|
| posted on 15/1/08 at 11:53 PM |
|
|
Never fitted "helicoils" my self but have the odd one done here and there, I remember a gearbox mount on an Audi and a stripped spark plug
thread on an old 2 stroke, both repairs lasted the lifetime of the car/bike without any problems.
Is it worth buying the kit as apposed to just taking the head to someone that has one ?
|
|
|
thunderace
|
| posted on 15/1/08 at 11:58 PM |
|
|
UMMM take off the head as you will fill it with alloy from the tap
it will work .
done it on high comp 2 stroke.
|
|
|
russbost
|
| posted on 16/1/08 at 12:01 AM |
|
|
The ones we used to use weren't actually a helicoil but a complete thread which was cold rolled into the drilled out plughole, we used to blast
the cylinder out with a blowgun b4 refitting the plug - fitted dozens never had any probs other than occaisionally the thread would come back out with
the plug when next removed - quickly resolved with some loctite on the thread when refitted
I no longer run Furore Products or Furore Cars Ltd, but would still highly recommend them for Acewell dashes, projector headlights, dominator
headlights, indicators, mirrors etc, best prices in the UK! Take a look at http://www.furoreproducts.co.uk/ or find more parts on Ebay, user names
furoreltd & furoreproducts, discounts available for LCB users.
Don't forget Stainless Steel Braided brake hoses, made to your exact requirements in any of around 16 colours.
http://shop.ebay.co.uk/furoreproducts/m.html?_dmd=1&_ipg=50&_sop=12&_rdc=1
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
britishtrident
|
| posted on 16/1/08 at 07:32 AM |
|
|
Big problem is that on the K16 like most other twin camshaft 16 valve engines the plugs are deeply recesssed.
Here is the alternative type to helicoils.
http://www.agriemach.com/product_info.php?cPath=34&products_id=722
All goes to underline the leason that if you suspect a plug isn't going in straight take the plug out and run a thread chaser down the
threads.
PS the plug thread length on the K is long reach 3/4" long.
[Edited on 16/1/08 by britishtrident]
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
|
|
|
David Jenkins
|
| posted on 16/1/08 at 08:48 AM |
|
|
And also start the plug by hand - if it won't go most of the way with just your fingers, there's something wrong!
|
|
|
r1_pete
|
| posted on 16/1/08 at 12:49 PM |
|
|
quote:
Originally posted by David Jenkins
And also start the plug by hand - if it won't go most of the way with just your fingers, there's something wrong!
and for deep seated plugs use a bit of rubber hose which is a light push fit on the insulator, itl'll slip before shagging the threads.
|
|
|
Coose
|
| posted on 16/1/08 at 01:04 PM |
|
|
And don't forget a dab of oil on the threads....
As mentioned, a well-fitted helicoil insert should last the lifetime of the head. In fact, you do quite often see helicoils fitted as standard on
automotive threads into alloy (motorbikes are a good example). Even if the fastener size is up to the job, the thread may not be so by fitting a
helicoil you're actually increasing the threaded area.
Spin 'er off Well...
|
|
|
